Home / 20,738.36-28,621.41-13,092.75

Finding the Fourth Proportional to 20,738.36, 28,621.41 and 13,092.75

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Solution

The fourth proportional to 20,738.36, 28,621.41 and 13,092.75 is: 18,069.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.36 : 28,621.41 = 13,092.75 : x
  2. Step 2: Convert to fraction form
    20,738.36/28,621.41 = 13,092.75/x
  3. Step 3: Cross multiply
    20,738.36x = 28,621.41 × 13,092.75
  4. Step 4: Simplify right side
    20,738.36x = 374,732,822.67
  5. Step 5: Solve for x
    x = 374,732,822.67/20,738.36
  6. Step 6: Final answer
    x = 18,069.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.